> 50 weight is the recommended viscosity for our motors.
By who? The factory manuals said 40 weight or 20W40 (Practical Hints 6th
ed), only if temperatures were above 70F.
> straight 50 weight is the old oil with all the nasty bits in it, like
> ZDDP.
Not necessarily. Viscosity grade says nothing about the additive package.
You can buy non-detergent 50 weight (which also lacks the other additives,
like ZDDP).
http://www.lubriplate.com/products/auto-and-marine/non-detergent-motor-oil.h
tml
> no problems with it, but i have only been running it for 2 years-5 oil
> changes-6 or 7 thousand miles.
Of course, it might be Paul lives where it is somewhat cooler than Temecula
(projected high today 94F).
-- Randall
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